/*
 * C/C++ Lessons Program
 * 
 * Copyright (c) 2012 Ken Zhang (cpp.china@gmail.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA  02111-1307  USA
 *
 */


#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <sys/types.h>

static void atexit1()
{
	printf("atexit1() in [%d]\n", getpid());
}

int main()
{
	atexit(atexit1);

	switch (vfork()) {
	case -1:
		perror("Failed calling vfork.");
		return -1;
	case 0:
		printf("Child proc [%d] started.\n", getpid());
		_exit(0);
		break;
	default:
		printf("Main proc [%d] continue.\n", getpid());
		exit(0);
		break;
	}
}

